Europe
Monaco
no articleGoing there, being there
à Monaco
Coming from
de Monaco
Why
Monaco takes no article at all, so the preposition stays à, with nothing between it and the name: à Monaco.
Example
Le Grand Prix a lieu à Monaco en mai.
The Grand Prix takes place in Monaco in May.
Worth knowing
Monaco is both the country and the city, and takes no article: à Monaco in both cases. The adjective is monégasque, not monacais.
Read the full lesson : Prepositions of place →